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Structure Lab


1.Two Hinged Arch Apparatus

The model has a span of 100cm and rise 25cm. Both ends are hinged but one of the ends is also free to move longitudinally. A lever arrangement is fitted at this end for the application of known horizontal inward force for measuring the horizontal thrust. Along the horizontal span of the arch various points are marked at equidistant for the application of load. This being a statically indeterminate structure of the first degree. A dial gauge with 25mm travel (with magnetic base) is supplied with the apparatus. Apparatus is supplied complete with a supporting stand and a set of weights.

2.Three Hinged Arch Apparatus

The model has a span of 100cm and rise 25cm, with hinges at supports and crown. One of the ends rests on rollers. Along the horizontal span of the arch various points are marked at equidistant for the application of load. This being a statically determinate structure, the horizontal thrust developed under the action of any load system can be theoretically calculated and will also be measured directly by neutralizing the outward movement of the roller end. A dial gauge with 25mm travel (with magnetic base) is supplied with the apparatus. Apparatus is supplied complete with a supporting stand.

3.Curved Member Apparatus

Apparatus consists of a steel bar which is used to make the different curved members viz. Circle, semicircle with straight arm, a quadrant of a circle and quadrant of a circle with straight arm. The bottom ends of the members are fixed to the base. Under the application of load at free end, its horizontal and vertical deflection is measured with the help of dial gauges. A dial gauge with 25mm travel (with a magnetic base) is supplied with the apparatus. Apparatus is supplied complete with a supporting stand and a set of weights.

4.Unsymmetrical Bending Apparatus

Apparatus consist of an angle of size 1" x 1" x 1/8" or in equivalent metric units of length 80cm is tied as a cantilever beam. The beam is fixed at one end such that the rotation of 45o intervals can be given and clamped such that the principal axis of its cross section may be inclined at any angle with the horizontal and vertical planes. Also arrangement is provided to apply vertical load at the free end of the cantilever and to measure horizontal & vertical deflection of the free end. A dial gauge with 25mm travel (with magnetic base) is supplied with the apparatus. Apparatus is supplied complete with a supporting stand and a set of weights.

5.Elastically Coupled Beam Apparatus

Apparatus consists of a three parallel bas suspension system with elastic beam at their upper and lower ends. The upper of the two outer suspension rods are tied to vertical wooden board while central suspension rod may be tied to the centre of another elastic beam supported at two outer ends only. Apparatus is supplied complete with a supporting stand and a set of weights.

6.Apparatus for Verification of Clerk's Maxwell Reciprocal Theorem Apparatus

Apparatus consists of a beam 100cm long and 1.25cm x 4mm in cross section with graduations at every 10cm along the length. It is supported on two knife edge supports 70cm apart with a 30cm overhang on one side. Varification of Clerks can be verified by direct measurements of the deflections of various points with the help of a dial gauge due to a load placed at the reciprocal points. A dial gauge with 25mm travel (with a magnetic base) is supplied with the apparatus. Apparatus is supplied complete with a supporting stand and a set of weights.

7.Deflection of Truss Apparatus

Apparatus consists of 4 panels of a Pratt truss, each panel being 40cm in horizontal direction and 30cm in vertical direction. Load can be applied on each panel point. All tension members are provided with detachable springs so as to obtain appreciable deformation of the member. Direction of the diagonal members may be changed. Apparatus can ve used to illustrate visually the nature of forces setup in various members of the truss. Apparatus is supplied complete with a supporting stand and a set of weights.

8.Behavior of Column And Struts Apparatus

Apparatus consists of four columns which are put along a vertical wooden board. These four columns have different end conditions as below:
i) Both ends pinned
ii) Both ends fixed
iii) One end pinned and other fixed
iv) One end fixed and other end free
Apparatus is supplied complete with a supporting stand and a set of weights.